Minimum RMS Output Power (8 ohms, 20 Hz-20 kHz)85 W + 85 W (0.019% THD) Maximum Power (4 ohms, 1kHz, 0.7% THD, for Europe)120 W + 120 W High Dynamic Power/Channel (8/6/4/2 ohms)130/150/185/220 W Damping Factor240 Frequency Response10 Hz-100 kHz +/-1.0 dB Total Harmonic Distortion (CD to Sp Out, 20 Hz-20 kHz)0.019% (50 W/8 ohms) Signal-to-Noise Ratio (CD)99dB (input shorted, 200 mV) Audio In / Out8 / 2 Digital InputYes (optical / coaxial) Subwoofer OutYes DC outYes Pure DirectYes ToP-ARTYes Standby Power Consumption0.5W Power Management (Auto Power Standby)Yes Dimensions (W x H x D)435 x 151 x 387 mm 17-1/8” x 6” x 15-1/4” Weight10.3 kg 22.7 lbs..